# Service Hoverfly Cloud services simulates real HTTP services such as web APIs and SOAP services. You can think of Hoverfly Cloud services as API simulations, over the wire test doubles, or more highly configurable HTTP stubs and mocks. Hoverfly Cloud uses our Open Source tool, [Hoverfly](https://github.com/SpectoLabs/hoverfly) to simulate a service. Hoverfly Cloud uses Kubernetes to run and manage multiple copies of Hoverfly, and adds a powerful GUI with many additional capabilities. The Service in Hoverfly Cloud refers to a running instance of Hoverfly with a loaded Simulation file. The Simulation file represents the configuration for the Service, how it will match incoming HTTP requests, and how it will respond when it makes a match. ## --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.cloud.hoverfly.io/work-with-services.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.